logic settings

1. how do you tell logic not to jump back a measure when you are recording? like i'm in the middle of the song and the cursor is in place and I hit record and then it jumps back a meausre and records from there
2. when mixing how do I get rid of the unused tracks in the mixer screen. I have like audio tracks 1-32 displayed when i'm only using 1-9, the extra tracks only show up on the mixer screen, not the arrange.